Brian has reduced his cholesterol level by 20% by following a strict diet and regular exercise. if his original level was 220, what is his cholesterol level now?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.